package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.UUID;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);


        //设置盐值
       // String salt="abc12345bb";

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex((password+employee.getSalt()).getBytes());
        System.out.println(password);
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void add(EmployeeDTO employeeDTO) {
        Employee employee=new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setCreateUser(BaseContext.getCurrentId()); // 创建人ID （其实就是当前登录员工的ID）
//        employee.setUpdateUser(BaseContext.getCurrentId()); // 修改人ID（其实就是当前登录员工的ID）
//        // 加盐加密
        String s = UUID.randomUUID().toString().replace("-","");
        String password = DigestUtils.md5DigestAsHex(("123456" + s).getBytes());
        employee.setPassword(password);
        employee.setSalt(s);
        employeeMapper.add(employee);
    }

    @Override
    public PageResult page(EmployeePageQueryDTO pageQueryDTO) {
         PageHelper.startPage(pageQueryDTO.getPage(), pageQueryDTO.getPageSize());
        Page<Employee> employeeList= employeeMapper.getPage(pageQueryDTO.getName());
        PageResult pageResult=new PageResult();
        pageResult.setTotal(employeeList.getTotal());
        pageResult.setRecords(employeeList.getResult());
        return pageResult;
    }

    @Override
    public void startOrStop(Long id, int status) {
        Employee employee=new Employee();
        employee.setId(id);
        employee.setStatus(status);
        employeeMapper.updateStatus(employee);
    }

    @Override
    public Employee selectBYId(Long id) {
         return employeeMapper.selectById(id) ;
    }

    @Override
    public void updateByid(EmployeeDTO employeeDTO) {
        Employee employee=new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.updateById(employee);
    }

}
